Now there are as many as 3×3×7=63 gear combinations on the bicycle
(or 57, if I avoid the simultaneous use of the biggest or smallest
gears). However, there are only 42 (or 40) distinct transmission
ratios. The following table lists all 57 gear combinations in
ascending order of transmission ratio:

Using 28-622 tires, one revolution of the rear wheel corresponds to
about 2.13 meters. At 60 rpm, the bicycle will make 5.8 km/h (walking pace) on the
smallest gear and 40.9 km/h on the biggest gear. When needed, the
bike can make 70‒80 kilometers per hour, if enough power is
available.